lcS74 0CT 6 



y 



^ 



AMERICAN 



MARINE CONCHOLOGY: 



DESCRIPTIONS OF THE SHELLS 



ATLANTIC COAST OF THE UNITED STATES, 



FROM MAINE TO FLORIDA. 

 BY 



GEORGE W. TRYOJSr, Jr., 



MEMBER OF THE ACAOEMY Of" NATURAL SCIENCES OP PHILADELPHIA. 



PHILADELPHIA: 



PUBLISHED BY THE AUTHOR, 



No. 19 North Sixth Street. 



